Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Should we use Google's crawl delay setting?
-
We’ve been noticing a huge uptick in Google’s spidering lately, and along with it a notable worsening of render times.
Yesterday, for example, Google spidered our site at a rate of 30:1 (google spider vs. organic traffic.) So in other words, for every organic page request, Google hits the site 30 times.
Our render times have lengthened to an avg. of 2 seconds (and up to 2.5 seconds). Before this renewed interest Google has taken in us we were seeing closer to one second average render times, and often half of that.
A year ago, the ratio of Spider to Organic was between 6:1 and 10:1.
Is requesting a crawl-delay from Googlebot a viable option?
Our goal would be only to reduce Googlebot traffic, and hopefully improve render times and organic traffic.
Thanks,
Trisha
-
Unfortunately you can't change crawl settings for Google in a robots.txt file, they just ignore it. The best way to rate limit them is using custom Crawl settings in Google Webmaster Tools. (look under Site configuration > Settings)
You also might want to consider using your loadbalancer to direct Google (and other search engines) to a "condomised" group of servers (app, db, cache, search) thereby ensuring your users arent inadvertantly hit by perfomance issues caused by over zealous bot crawling.
-
We're a publisher, which means that as an industry our normal render times are always at the top of the chart. Ads are notoriously slow to load, and that's how we earn our keep. These results are bad, though, even for publishing.
We're serving millions of uniques a month, on a bank of dedicated servers hosted off site, load balanced, etc.
-
more info on that here: http://www.robotstxt.org/
-
Wow! those are really high render times. Have you considered perhaps moving to another webserver? NginX is pretty damm fast, and could probably get those render times down. Also, are you on a shared host? or is this a dedicated server?
What you're looking for is the robots.txt file though, and you want to add some lines like this:
User-agent: * Disallow: Crawl-Delay: 10 User-agent: ia_archiver Disallow: / User-agent: Ask Jeeves Crawl-Delay: 120 User-agent: Teoma Disallow: /html/ Crawl-Delay: 120
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Why can't google mobile friendly test access my website?
getting the following error when trying to use google mobile friendly tool: "page cannot be reached. This could be because the page is unavailable or blocked by robots.txt" I don't have anything blocked by robots.txt or robots tag. i also manage to render my pages on google search console's fetch and render....so what can be the reason that the tool can't access my website? Also...the mobile usability report on the search console works but reports very little, and the google speed test also doesnt work... Any ideas to what is the reason and how to fix this? LEARN MOREDetailsUser agentGooglebot smartphone
Technical SEO | | Nadav_W0 -
Spam URL'S in search results
We built a new website for a client. When I do 'site:clientswebsite.com' in Google it shows some of the real, recently submitted pages. But it also shows many pages of spam url results, like this 'clientswebsite.com/gockumamaso/22753.htm' - all of which then go to the sites 404 page. They have page titles and meta descriptions in Chinese or Japanese too. Some of the urls are of real pages, and link to the correct page, despite having the same Chinese page titles and descriptions in the SERPS. When I went to remove all the spammy urls in Search Console (it only allowed me to temporarily hide them), a whole load of new ones popped up in the SERPS after a day or two. The site files itself are all fine, with no errors in the server logs. All the usual stuff...robots.txt, sitemap etc seems ok and the proper pages have all been requested for indexing and are slowly appearing. The spammy ones continue though. What is going on and how can I fix it?
Technical SEO | | Digital-Murph0 -
New theme adds ?v=1d20b5ff1ee9 to all URL's as part of cache. How does this affect SEO
New theme I am working in ads ?v=1d20b5ff1ee9 to every URL. Theme developer says its a server setting issue. GoDaddy support says its part of cache an becoming prevalent in new themes. How does this impact SEO?
Technical SEO | | DML-Tampa0 -
Should I noindex my blog's tag, category, and author pages
Hi there, Is it a good idea to no index tag, category, and author pages on blogs? The tag pages sometimes have duplicate content. And the category and author pages aren't really optimized for any search term. Just curious what others think. Thanks!
Technical SEO | | Rignite0 -
Why is Google's cache preview showing different version of webpage (i.e. not displaying content)
My URL is: http://www.fslocal.comRecently, we discovered Google's cached snapshots of our business listings look different from what's displayed to users. The main issue? Our content isn't displayed in cached results (although while the content isn't visible on the front-end of cached pages, the text can be found when you view the page source of that cached result).These listings are structured so everything is coded and contained within 1 page (e.g. http://www.fslocal.com/toronto/auto-vault-canada/). But even though the URL stays the same, we've created separate "pages" of content (e.g. "About," "Additional Info," "Contact," etc.) for each listing, and only 1 "page" of content will ever be displayed to the user at a time. This is controlled by JavaScript and using display:none in CSS. Why do our cached results look different? Why would our content not show up in Google's cache preview, even though the text can be found in the page source? Does it have to do with the way we're using display:none? Are there negative SEO effects with regards to how we're using it (i.e. we're employing it strictly for aesthetics, but is it possible Google thinks we're trying to hide text)? Google's Technical Guidelines recommends against using "fancy features such as JavaScript, cookies, session IDs, frames, DHTML, or Flash." If we were to separate those business listing "pages" into actual separate URLs (e.g. http://www.fslocal.com/toronto/auto-vault-canada/contact/ would be the "Contact" page), and employ static HTML code instead of complicated JavaScript, would that solve the problem? Any insight would be greatly appreciated.Thanks!
Technical SEO | | fslocal0 -
How Does Google's "index" find the location of pages in the "page directory" to return?
This is my understanding of how Google's search works, and I am unsure about one thing in specific: Google continuously crawls websites and stores each page it finds (let's call it "page directory") Google's "page directory" is a cache so it isn't the "live" version of the page Google has separate storage called "the index" which contains all the keywords searched. These keywords in "the index" point to the pages in the "page directory" that contain the same keywords. When someone searches a keyword, that keyword is accessed in the "index" and returns all relevant pages in the "page directory" These returned pages are given ranks based on the algorithm The one part I'm unsure of is how Google's "index" knows the location of relevant pages in the "page directory". The keyword entries in the "index" point to the "page directory" somehow. I'm thinking each page has a url in the "page directory", and the entries in the "index" contain these urls. Since Google's "page directory" is a cache, would the urls be the same as the live website (and would the keywords in the "index" point to these urls)? For example if webpage is found at wwww.website.com/page1, would the "page directory" store this page under that url in Google's cache? The reason I want to discuss this is to know the effects of changing a pages url by understanding how the search process works better.
Technical SEO | | reidsteven750 -
Best Practices for adding Dynamic URL's to XML Sitemap
Hi Guys, I'm working on an ecommerce website with all the product pages using dynamic URL's (we also have a few static pages but there is no issue with them). The products are updated on the site every couple of hours (because we sell out or the special offer expires) and as a result I keep seeing heaps of 404 errors in Google Webmaster tools and am trying to avoid this (if possible). I have already created an XML sitemap for the static pages and am now looking at incorporating the dynamic product pages but am not sure what is the best approach. The URL structure for the products are as follows: http://www.xyz.com/products/product1-is-really-cool
Technical SEO | | seekjobs
http://www.xyz.com/products/product2-is-even-cooler
http://www.xyz.com/products/product3-is-the-coolest Here are 2 approaches I was considering: 1. To just include the dynamic product URLS within the same sitemap as the static URLs using just the following http://www.xyz.com/products/ - This is so spiders have access to the folder the products are in and I don't have to create an automated sitemap for all product OR 2. Create a separate automated sitemap that updates when ever a product is updated and include the change frequency to be hourly - This is so spiders always have as close to be up to date sitemap when they crawl the sitemap I look forward to hearing your thoughts, opinions, suggestions and/or previous experiences with this. Thanks heaps, LW0 -
Does Google pass link juice a page receives if the URL parameter specifies content and has the Crawl setting in Webmaster Tools set to NO?
The page in question receives a lot of quality traffic but is only relevant to a small percent of my users. I want to keep the link juice received from this page but I do not want it to appear in the SERPs.
Technical SEO | | surveygizmo0